Gas circulation filtering device and reflow soldering system
A filter device and gas circulation technology, applied in auxiliary devices, steam condensation, welding equipment, etc., can solve the problems of increased nitrogen consumption, low nitrogen recycling rate, and environmental pollution of heating chamber welding
Pending Publication Date: 2021-05-18
SHENZHEN JT AUTOMATION EQUIP CO LTD
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Problems solved by technology
[0003] The volatile rosin and air dust in the above mixed gas will cause the welding environment pollution of the heating chamber, and the maintenance frequency of the heating chamber is high. At the same time, the recycling rate of nitrogen is low, which increases the consumption of nitrogen.
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0021] Please refer to figure 1 , figure 1 A schematic structural diagram of a reflow soldering system provided by an embodiment of the present invention.
[0022] In the first specific embodiment, the gas circula...
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The invention discloses a gas circulation filtering device and a reflow soldering system, the gas circulation filtering device comprises a circulation box provided with a channel II and a channel I which are separated from each other and close to each other side by side, an inlet of the channel I is used for introducing gas I mixed with nitrogen and rosin volatile gas, a refrigerating medium is arranged in the channel II, the temperature of the channel II is lower than that of the channel I so as to realize condensation and crystallization of rosin, and an outlet of the channel I is used for sending out purified nitrogen. The gas circulation filtering device can filter out rosin in the mixed gas and discharge purified nitrogen, so that the welding environment of the heating cavity into which the nitrogen is discharged is purified, and the reliability of a product is improved.
Description
technical field [0001] The invention relates to the technical field of welding air circulation, in particular to a gas circulation filter device. It also relates to a reflow soldering system. Background technique [0002] In the field of wafer packaging and SMT circuit board welding, the wafer is transported to the heating cavity of the reflow soldering equipment through the transport structure, and the heating is realized while transporting; at this time, the main components of the mixed gas in the cavity are: a. Under the conditions, the mixed gas containing rosin is volatilized from the flux, b, nitrogen gas with higher concentration, c, dust in the air and other mixtures. [0003] The volatile rosin and air dust in the above mixed gas will cause the welding environment pollution of the heating chamber, and the maintenance frequency of the heating chamber is high. At the same time, the recycling rate of nitrogen is low, which increases the consumption of nitrogen. In th...
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IPC IPC(8): B01D53/00B01D5/00B23K3/08
CPCB01D53/002B01D5/0003B23K3/08
Inventor 吴限
Owner SHENZHEN JT AUTOMATION EQUIP CO LTD